What is a KV3 file? A KV3 file is a plain text data file used by a Valve video game, such as Dota 2 or CounterStrike:Global Offensive (CS:GO). It contains text written in a structure similar to JSON . In CS:GO, KV3 files control how the game's bots behave.

More Information KV3 file open in GitHub Atom KV3 stands for KeyValues3, which is a Valve-developed data format that is similar to JSON and XML . However, KV3 files also support binary encodings, versioning, and data annotations. They also include support for some additional text syntax . Each KV3 file begins with a line that contains a kv3 encoding header. It then goes on to define how a game object behaves. For example, bt_default.kv3 is a KV3 behavior tree, which defines how CS:GO bots behave in deathmatches. Bt_default.kv3 contains references to other KV3 files, stored in CS:GO's scripts/​ai/​modules directory. Those KV3 files contain scripts that bots execute to perform in-game actions.